# A Complete System of Commercial Arithmetic, Its Application to the Principal Branches of Commerce According to the Existing Practices of Trade, & Numerous Rules for Facilitating & Performing Mental Calculations: With an App...

E. Wilson, 1837 - 337 σελίδες

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### Περιεχόμενα

 Tables of Weights and Measures 16 Compound Addition 28 Fractional Multipliers 53 Divisors 65 Practice 71
 Draft Tare and Tret 85 Bills of Parcels 91 Profit and LOSS 97 Discount 111 Insurances 117

### Δημοφιλή αποσπάσματα

Σελίδα 131 - To change a mixed number to an improper fraction, multiply the whole number by the denominator of the fraction and add the numerator.
Σελίδα 21 - OF TIME. 60 Seconds = 1 Minute 60 Minutes =± 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Σελίδα 20 - ... 40 square rods, 1 square rood. 4 square roods, 1 square acre. 640 square acres, 1 square mile. 1 1 . Solid, or Cubic Measure. 1728 solid inches make 1 solid foot. 40 feet of round timber, oi > . . , , 50 feet of hewn timber, Î 1 ton or load...
Σελίδα 131 - To reduce an improper fraction to a whole or mixed number, — RULE : Divide the numerator by the denominator ; the quotient will be the whole or mixed number.
Σελίδα 21 - Measures. 1728 cubic inches make 1 cubic foot 27 cubic feet - 1 cubic yard...
Σελίδα 142 - Rule. — Multiply the numerators together for the numerator of the product, and the denominators together for the denominator of the product.
Σελίδα 133 - Multiply all the numerators together for a new numerator, and all the denominators together for a new denominator.
Σελίδα 204 - The sum of all the terms. Any three of which being given, the other two may be found.
Σελίδα 52 - Multiply the whole number by the numerator of the fraction, and divide the product by the denominator ; or divide the whole number by the denominator of the fraction, and multiply the quotient by the numerator.
Σελίδα 18 - LENOTH. 12 inches 1 foot. 3 feet 1 yard. 5J yards 1 rod, pole or perch. 40 poles ..... 1 furlong. 8 furlongs, or 1760 yds.